mirror of
https://github.com/jart/cosmopolitan.git
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1ff9ab95ac
This change enables Address Sanitizer systemically w/ `make MODE=dbg`. Our version of Rust's `unsafe` keyword is named `noasan` which is used for two functions that do aligned memory chunking, like `strcpy.c` and we need to fix the tiny DEFLATE code, but that's it everything else is fabulous you can have all the fischer price security blankets you need Best of all is we're now able to use the ASAN data in Blinkenlights to colorize the memory dumps. See the screenshot below of a test program: https://justine.lol/blinkenlights/asan.png Which is operating on float arrays stored on the stack, with red areas indicating poisoned memory, and the green areas indicate valid memory.
73 lines
2.7 KiB
ArmAsm
73 lines
2.7 KiB
ArmAsm
/*-*- mode:unix-assembly; indent-tabs-mode:t; tab-width:8; coding:utf-8 -*-│
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│vi: set et ft=asm ts=8 tw=8 fenc=utf-8 :vi│
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2020 Justine Alexandra Roberts Tunney │
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│ │
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│ Permission to use, copy, modify, and/or distribute this software for │
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│ any purpose with or without fee is hereby granted, provided that the │
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│ above copyright notice and this permission notice appear in all copies. │
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│ │
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│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
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│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
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│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
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│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
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│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
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│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
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│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
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│ PERFORMANCE OF THIS SOFTWARE. │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/dce.h"
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#include "libc/macros.h"
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#include "libc/notice.inc"
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#include "libc/sysv/consts/prot.h"
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#include "libc/sysv/consts/map.h"
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#include "libc/dce.h"
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.text.startup
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.source __FILE__
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/ Cosmopolitan runtime.
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/
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/ @param edi is argc
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/ @param rsi is argv
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/ @param rdx is environ
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/ @param rcx is auxv
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/ @noreturn
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cosmo: push %rbp
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mov %rsp,%rbp
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ezlea _base,bx
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mov %edi,%r12d
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mov %rsi,%r13
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mov %rdx,%r14
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mov %rcx,%r15
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#ifdef __FAST_MATH__
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call __fast_math
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#endif
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call _init
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call _construct
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#if !IsTrustworthy()
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mov $PROT_READ,%edi
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call _piro
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#endif
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mov %r12d,%edi
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mov %r13,%rsi
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mov %r14,%rdx
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mov %r15,%rcx
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.weak main
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call main
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xchg %eax,%edi
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call exit
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.endfn cosmo,weak,hidden
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ud2
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#ifdef __PG__
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.init.start 800,_init_ftrace
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push %rdi
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push %rsi
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mov %r12d,%edi
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mov %r13,%rsi
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call ftrace_init
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mov %eax,%r12d
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pop %rsi
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pop %rdi
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.init.end 800,_init_ftrace
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#endif
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